816867033 has 4 divisors (see below), whose sum is σ = 1089156048. Its totient is φ = 544578020.

The previous prime is 816867013. The next prime is 816867049. The reversal of 816867033 is 330768618.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 816867033 - 2¹⁴ = 816850649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816867013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136144503 + ... + 136144508.

It is an arithmetic number, because the mean of its divisors is an integer number (272289012).

Almost surely, 2^816867033 is an apocalyptic number.

It is an amenable number.

816867033 is a deficient number, since it is larger than the sum of its proper divisors (272289015).

816867033 is a wasteful number, since it uses less digits than its factorization.

816867033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272289014.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 816867033 is about 28580.8857980294. The cubic root of 816867033 is about 934.7965977327.

The spelling of 816867033 in words is "eight hundred sixteen million, eight hundred sixty-seven thousand, thirty-three".